Patent US815943A successfully refreshed from Google Patents.
US815943A
Expired / Lapsed
US
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Simultaneous locking of doors of railway-carriages.
Assignee: Individual
•
Filing: 1905-04-17
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Granted: 1906-03-27
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Expires: 1925-04-17
Abstract
No abstract record available.
Inventors
- 👤 Nathan Dewhurst
- 👤 John William Moore
- 👤 Robert Taylor Griffiths
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:57
CPC Classifications
E; E05; E05C; E05C9/00; E05C9/04; E05C9/043; Y; Y10; Y10S; Y10S292/00; Y10S292/03; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0803; Y10T292/0805; Y10T292/0806; Y10T292/096; Y10T292/1014; Y10T292/1018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1909-03-26 | 1909-09-25 | 1910-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-03-26 | 1913-09-25 | 1914-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-03-26 | 1917-09-25 | 1918-03-27 | $7700.00 | Window Closed / Lapsed |